R32 is a pure fluid. Its normal boiling point is -51.7 °C; the critical pressure is 57.8 bar. At the AHRI 540 air-conditioning rating point — 7.2 °C evaporating, 54.4 °C condensing — the saturation pressures are 10.18 and 34.73 bar, a pressure ratio of 3.41.
| °C | kPa abs | bar abs | psig | hfg kJ/kg | ρ liquid kg/m³ | ρ vapour kg/m³ |
|---|---|---|---|---|---|---|
| -75 | 26.2 | 0.262 | -10.9 | 405.9 | 1275 | 0.84 |
| -70 | 36.1 | 0.361 | -9.5 | 400.9 | 1262 | 1.14 |
| -65 | 48.8 | 0.488 | -7.6 | 395.9 | 1249 | 1.51 |
| -60 | 65.0 | 0.650 | -5.3 | 390.7 | 1236 | 1.97 |
| -55 | 85.2 | 0.852 | -2.3 | 385.5 | 1222 | 2.54 |
| -50 | 110.1 | 1.101 | 1.3 | 380.1 | 1208 | 3.23 |
| -45 | 140.6 | 1.406 | 5.7 | 374.5 | 1194 | 4.07 |
| -40 | 177.4 | 1.774 | 11.0 | 368.8 | 1180 | 5.07 |
| -35 | 221.4 | 2.214 | 17.4 | 362.9 | 1166 | 6.25 |
| -30 | 273.4 | 2.734 | 25.0 | 356.8 | 1151 | 7.64 |
| -25 | 334.6 | 3.346 | 33.8 | 350.5 | 1136 | 9.27 |
| -20 | 405.8 | 4.058 | 44.2 | 344.0 | 1121 | 11.16 |
| -15 | 488.1 | 4.881 | 56.1 | 337.3 | 1105 | 13.35 |
| -10 | 582.6 | 5.826 | 69.8 | 330.3 | 1089 | 15.87 |
| -5 | 690.6 | 6.906 | 85.5 | 322.9 | 1072 | 18.77 |
| 0 | 813.1 | 8.131 | 103.2 | 315.3 | 1055 | 22.09 |
| 5 | 951.4 | 9.514 | 123.3 | 307.3 | 1038 | 25.89 |
| 10 | 1106.9 | 11.069 | 145.8 | 298.9 | 1020 | 30.23 |
| 15 | 1280.8 | 12.808 | 171.1 | 290.1 | 1001 | 35.19 |
| 20 | 1474.6 | 14.746 | 199.2 | 280.8 | 981 | 40.86 |
| 25 | 1689.6 | 16.896 | 230.4 | 270.9 | 961 | 47.34 |
| 30 | 1927.5 | 19.275 | 264.9 | 260.4 | 940 | 54.78 |
| 35 | 2189.8 | 21.898 | 302.9 | 249.2 | 917 | 63.34 |
| 40 | 2478.3 | 24.783 | 344.8 | 237.1 | 893 | 73.27 |
| 45 | 2794.8 | 27.948 | 390.7 | 224.0 | 867 | 84.86 |
| 50 | 3141.2 | 31.412 | 440.9 | 209.6 | 839 | 98.55 |
| 55 | 3519.9 | 35.199 | 495.8 | 193.6 | 808 | 114.99 |
| 60 | 3933.2 | 39.332 | 555.8 | 175.5 | 773 | 135.21 |
| 65 | 4384.3 | 43.843 | 621.2 | 154.3 | 732 | 161.09 |
| 70 | 4876.8 | 48.768 | 692.6 | 127.8 | 681 | 196.69 |
| 75 | 5416.8 | 54.168 | 770.9 | 89.3 | 606 | 255.59 |
Pressures are absolute in kPa and bar, gauge in psig (at 101.325 kPa atmospheric); hfg is the latent heat of vaporisation at the dew pressure; densities are saturated liquid and saturated vapour. Computed with CoolProp 8.0.1dev, the open-source property library the solver runs on, sampled every 0.5 K and printed every 5 K — the same tables the builder reads when it solves a circuit on R32.
44 compressor maps run on R32, each a page with its AHRI 540 / EN 12900 map across the published envelope, and each selectable in the builder. Read any of them at your own evaporating and condensing temperatures →
Open the builder — draw a circuit on R32, and the solver finds its evaporating and condensing temperatures from the coils and the compressor's map.